Free Observatories · Okutama

Ogochi Dam Observation Tower 小河内ダム展望塔

Free observation tower beside Ogochi Dam at Lake Okutama, looking down more than 100 m below the dam on one side and across the reservoir and Okutama mountains on the other.

Hours10:00-16:00 (until 17:00 from 20 July to 31 August)

ClosedYear-end and New Year holidays (28 Dec-4 Jan)

PriceFree

Getting thereOkutama (JR Ome Line), then bus to Okutama-ko

Time needed30-45 min

Best timeAutumn foliage season, daytime

AddressOgochi Dam, 5 Hara, Okutama, Nishitama District, Tokyo

Websitewaterworks.metro.tokyo.lg.jp/suigen/ante

About

Ogochi Dam, run by the Tokyo Metropolitan Waterworks Bureau, holds back Lake Okutama, one of Tokyo's own water sources. Its observation tower has a diorama of the dam and panels on its history on the 2nd floor and a viewing room on the 3rd floor. East-facing windows look straight down more than 100 m to the foot of the dam, and west-facing windows take in the reservoir and the forested Okutama mountains. It is about 500 m on foot from the Okutama Mizu to Midori no Fureaikan visitor centre.

Highlights

Free entry
Drop of more than 100 m below the dam
View over Lake Okutama and the Okutama mountains
Dam diorama and history panels

Tips

Pair it with the Okutama Mizu to Midori no Fureaikan visitor centre (closed Wednesdays).
Autumn foliage season is the most scenic but busiest time.
Buses from Okutama Station are infrequent, so check return times.

Open in Google Maps · Info checked 2026-10-11

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Ogochi Dam Observation Tower 小河内ダム展望塔

About

Highlights

Tips

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